[U-Boot-Users] MPC8540 mtest "hang" with 1GByte memory module

[Scott Coulter]

Hi all,

I think I found it.  I based my boards u-boot port on the SBC85xx board
port.  My CCSRBAR was setup at 0xff700000.  Kicking around in init.S was
code to setup LAWBAR2/LAWAR2 starting at 0xe0000000 for 512MB of LBC
access and code to setup TLB3 to cover a cache-inhibited area starting
at 0xf0000000 for 256MB.  I changed both the LAW and TLB definitions to
only cover my flash starting at 0xffc00000 for 4MB and the memory test
works OK.  Somehow the processor must have been getting confused as to
whether the UART registers were in the CCSRBAR region or on the local
bus.

BTW I have since changed init.S to follow that of the MPC8540ADS and the
TQM85xx boards along with moving CCSRBAR to 0xe0000000.

Thanks for the input,

Scott





___________________________________________________________________

  Scott N. Coulter
  Senior Software Engineer
  
  Cyclone Microsystems          
  370 James Street              Phone:  203.786.5536 ext. 118
  New Haven, CT 06513-3051      Email:  scott.coulter at cyclone.com
  U.S.A.                        Web:    http://www.cyclone.com
___________________________________________________________________